Erm...
Not to be Buzz Killington, here, but a discovery was made earlier in the year that, due to the extreme amount of time since the death of dinosaurs and the half-lives of the different elements in their DNA, it'd be physically impossible to ever clone one.
We can still do wooly mammoths and ****, though.

Except that something not many people think about is that after only a couple generations of dinosaurs, they would be small enough to be much easier domesticated because of there not being as much oxygen, or we could only clone the smaller dinosaurs. After that it's just a matter of managing to domesticate them like we did wolves. Imagine how much better of a hunting companion a dinosaur would be as long as you trained them not to just eat the animal when they kill it.